CN214930606U - Rotor wing tilting device and autorotation rotor wing aircraft - Google Patents

Abstract

The present disclosure provides a rotor wing tilting device, comprising a rotor wing bracket assembly for mounting a rotor wing, the rotor wing bracket assembly having three fulcrums, the rotor wing bracket assembly being configured to move from two of the three fulcrums to control the rotor wing to tilt; a support arm having one end connected to a first of the three pivot points, the rotor bracket assembly being configured to rotate relative to the support arm about the first pivot point; and the tilting control assembly is connected with a second fulcrum and/or a third fulcrum in the three fulcrums, and the tilting control assembly is configured to control the movement of the second fulcrum and/or the third fulcrum so that the rotor bracket assembly tilts around the first fulcrum. The present disclosure also provides a rotary wing aircraft.

Description

Rotor wing tilting device and autorotation rotor wing aircraft

Technical Field

The present disclosure relates to the field of unmanned aerial vehicles, and more particularly, to a rotor tilting device and a self-rotating rotor aircraft.

Background

Among the present technique, the rotor transmission system (the device that verts) of gyroplane generally adopts multi-link controlling device, and manned gyroplane generally adopts the transmission system of full manual operation connecting rod to control the rotor, and this transmission system's structure is complicated, and weight and bulky are unfavorable for using on unmanned aerial vehicle. For example, a manned aircraft is often provided with a control handle, a large number of connecting rods, a conversion rocker arm, a bracket, a push rod and other transmission components between a cockpit and a rotor head, the system has huge weight and volume and low space utilization rate, and when the system is applied to an unmanned aerial vehicle, the requirement of the unmanned rotorcraft on the 'light weight' of a rotor transmission system is difficult to meet; in addition, the transmission line of the transmission system is long, a plurality of connections exist between a cab and a rotor head, the assembly space is narrow, the disassembly and the assembly are time-consuming, the maintainability is poor, and the requirement of rapid maintenance of the transmission system of the unmanned rotorcraft is not facilitated; meanwhile, the installation space and the size of the transmission system are different, different types of manned gyroplanes are often provided with different types of rotor transmission systems, and the interchangeability is poor, so that the universal requirements of different types of unmanned gyroplanes on the same type of rotor transmission systems are difficult to meet if the structure of the type of rotor tilting devices of the manned gyroplanes is applied to the unmanned aerial vehicle at the same time.

In implementing the disclosed concept, the inventors found that there are at least the following problems in the related art:

unmanned aerial vehicle's rotor device structure of verting is comparatively complicated, the mass proportion of whole device is great, be unfavorable for unmanned aerial vehicle transmission system's quick demand of maintaining on the one hand, on the other hand is difficult to satisfy unmanned aerial vehicle's lightweight demand, in addition, different unmanned aerial vehicle's rotor device of verting is because the carrying capacity who bears of rotor is different, need adjust the structure of the device of verting to different unmanned aerial vehicle, the structure that causes the rotor device of verting between the unmanned aerial vehicle of different types is different, be difficult to satisfy the rotor device of verting's between the unmanned aerial vehicle of different models universalization demand.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present disclosure provides a rotor tilter apparatus, including a rotor bracket assembly for mounting a rotor, the rotor bracket assembly having three fulcrums, the rotor bracket assembly being configured to be moved by two of the three fulcrums to control the rotor to tilt; a support arm connected at one end to a first of the three fulcrums, the rotor mast assembly configured to rotate relative to the support arm about the first fulcrum; a tilt control assembly coupled to a second pivot point and/or a third pivot point of the three pivot points, the tilt control assembly configured to control movement of the second pivot point and/or the third pivot point to tilt the rotor bracket assembly about the first pivot point.

According to an embodiment of the present disclosure, the tilt control assembly includes at least one tilt control mechanism, the tilt control mechanism including: a support bar; the rocker arm assembly is arranged on the supporting arm in a swinging mode, a first connecting point and a second connecting point are arranged on the rocker arm assembly, and the first connecting point is connected with the second fulcrum or the third fulcrum through the supporting rod; and the first end part of the steering engine is connected with the second connecting point, and the steering engine is configured to drive the rocker arm assembly to swing around a swing center and drive the second fulcrum or the third fulcrum to move.

According to an embodiment of the present disclosure, the tilting control assembly includes two tilting control mechanisms, wherein a first tilting control mechanism is connected to the second fulcrum, and a second tilting control mechanism is connected to the third fulcrum.

According to an embodiment of the present disclosure, a distance from the first connection point to the swing center is smaller than or equal to a distance from the second connection point to the swing center.

According to an embodiment of the present disclosure, the rocker arm assembly comprises: the rocker arm bracket is fixedly arranged on the supporting arm, and two sides of the rocker arm bracket are provided with first through holes; the first end part of the rocker arm main body is provided with a second through hole corresponding to the first through hole, and the first end part far away from the rocker arm main body is provided with the first connecting point and the second connecting point; a connecting member configured to pass through the first and second through holes to hinge the rocker arm stand and the rocker arm body.

According to the embodiment of the disclosure, at least one limiting component is further arranged on the rocker arm support and is configured to limit the rocker arm main body when the rocker arm main body swings relative to the rocker arm support.

According to an embodiment of the present disclosure, the rotor bracket assembly comprises: the rotor wing bracket main body is used for installing a rotor wing, the first side edge of the first end part of the rotor wing bracket main body is provided with the second fulcrum, and the second side edge is provided with the third fulcrum; and a steering member provided at a second end portion of the rotor bracket body opposite to the first end portion of the rotor bracket body and connected to the support arm as the first fulcrum.

According to an embodiment of the present disclosure, the steering member is provided with a first connector connected to the rotor bracket body and a second connector connected to the support arm; the steering component is configured to rotate the rotor bracket body in a first direction about the first connector, the rotor bracket body driving the steering component to rotate relative to the support arm in a second direction about the second connector; wherein the first direction is perpendicular to the second direction.

According to the embodiment of the disclosure, the second end part of the steering engine is arranged on the supporting arm through a steering engine support, and the steering engine is configured to swing around the steering engine support at the second end part of the steering engine.

According to the embodiment of the disclosure, a bushing is arranged at the joint between the steering engine support and the second end of the steering engine.

According to yet another embodiment of the present disclosure, there is also provided a rotary-wing aircraft, comprising a fuselage; the power rotor wing is used for providing power for the autorotation rotor wing aircraft; a lift rotor for providing lift to the autorotation rotor craft; and the rotor tilting device is arranged at the top of the fuselage of the autorotation rotor aircraft and is used for installing the lift rotor in the fuselage.

According to the embodiment of the present disclosure, the rotor bracket component adopts three fulcrum location, through rotatable being connected with the support arm with first fulcrum in the rotor bracket component, simultaneously through the removal of verting control assembly control second fulcrum and/or third fulcrum, accomplish the control of verting to the rotor bracket component, and then control verting to the unmanned aerial vehicle rotor, this rotor verts device simple structure, be convenient for install and dismantle, be favorable to unmanned gyroplane transmission system's quick maintenance, the control assembly that verts simultaneously can control second fulcrum or third fulcrum respectively, be favorable to realizing the technological effect of verting the control at a plurality of angles to the rotor.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure with reference to the accompanying drawings, in which:

figure 1 schematically illustrates a structural schematic of a rotor tilter apparatus according to an embodiment of the present disclosure;

figure 2 schematically illustrates a structural schematic of a support rod of a rotor tilter apparatus according to an embodiment of the disclosure;

figure 3a schematically illustrates a structural schematic of a rocker body of a rotor tilter device according to an embodiment of the present disclosure;

figure 3b schematically illustrates a structural schematic of a rocker arm carrier of a rotor tilter apparatus according to an embodiment of the present disclosure;

figure 3c schematically illustrates a structural schematic of a limiting component of a rotor tilter device according to an embodiment of the disclosure;

figure 4 schematically illustrates a structural schematic view of a rotor bracket assembly of a rotor tilter apparatus according to an embodiment of the present disclosure;

figure 5a schematically illustrates a schematic structural view of a steering engine bracket of a rotor tilter device according to an embodiment of the disclosure;

figure 5b schematically illustrates a structural schematic of a bushing of a rotor tilter device according to an embodiment of the present disclosure;

figure 6a schematically illustrates a schematic view of a pitch operation of a rotor tilter device according to an embodiment of the present disclosure;

figure 6b schematically illustrates a schematic diagram of a roll operation of a rotor tilter device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

Fig. 1 schematically illustrates a structural schematic of a rotor tilter apparatus according to an embodiment of the present disclosure.

As shown in fig. 1, the rotor tilter apparatus of the disclosed embodiment includes a rotor bracket assembly 11, a support arm 12, and a tilt control assembly 13. Therein, the rotor bracket assembly 11 is used for mounting a rotor (not shown) and has three fulcrums (including a first fulcrum 111, a second fulcrum 112, and a third fulcrum 113), and the rotor bracket assembly is configured to move from two of the three fulcrums to control the rotor to tilt. One end of the support arm 12 is connected to a first pivot point 111 of the three pivot points, and the rotor bracket assembly 11 is configured to be rotatable relative to the support arm 12 about the first pivot point 111. The tilt control assembly 13 is connected to a second pivot point 112 and/or a third pivot point 113 of the three pivot points, and the tilt control assembly 13 is configured to control movement of the second pivot point 112 and/or the third pivot point 113 to tilt the rotor bracket assembly 11 about the first pivot point 111.

According to the embodiment of the present disclosure, the top of the rotor bracket assembly 11 is used for mounting the rotor, the rotor bracket assembly 11 has three supporting points for positioning the whole rotor bracket assembly 11, and when the rotor mounted on the rotor bracket assembly 11 rotates, the plane of the rotor rotation is parallel to the plane of the rotor bracket assembly determined by the three supporting points. A first pivot 111 of the three pivots of the rotor bracket assembly is connected to the top end of the support arm 12, and the support arm 12 is fixed to the fuselage of the drone (not shown), so that the first pivot 111 does not move at the connection to the support arm 12. The tilt control assembly 13 is connected to the second fulcrum 112 and/or the third fulcrum 113, and can drive the second fulcrum 112 or the third fulcrum 113 to move, and when the second fulcrum 112 or the third fulcrum 113 moves, because the first fulcrum 111 is fixed, the rotor bracket assembly 11 can only rotate around the first fulcrum 111 relative to the support arm 12. Therefore, when the plane of the rotor bracket assembly 11 moves at the second pivot point 112 or the third pivot point 113, the plane also tilts or rotates, and further drives the rotor mounted on the rotor bracket assembly 11 to tilt. The rotor tilting device of the embodiment of the present disclosure has a simple structure, and can realize the control of the rotor rotation plane only by controlling one or two of the second fulcrum 112 and the third fulcrum 113, and therefore, the rotor tilting device after simplification is beneficial to the quick dismounting and mounting maintenance of the rotor transmission system of the unmanned aerial vehicle.

Fig. 2 schematically illustrates a structural schematic of a support rod of a rotor tilter apparatus according to an embodiment of the disclosure.

Figure 3a schematically illustrates a schematic structural view of a rocker body of a rotor tilter device according to an embodiment of the present disclosure.

As shown in fig. 1, 2 and 3a, the tilt control assembly 13 includes at least one tilt control mechanism, which includes: support rod 131, rocking arm subassembly 132, steering wheel 135. Wherein, the swing arm component 132 is swingably mounted on the supporting arm 12, the swing arm component 132 is provided with a first connecting point 133 and a second connecting point 134, and the first connecting point 133 is connected with the second fulcrum 112 or the third fulcrum 113 through the supporting rod 131. A first end portion 1351 of the steering engine 135 is connected to the second connection point 134, and the steering engine 135 is configured to drive the rocker arm assembly 132 to swing around the swing center 136 and drive the second fulcrum 112 or the third fulcrum 113 to move.

For example, the swing center 136 is the center of the circle about which the rocker arm assembly 132 rotates at a point during a swing.

According to the embodiment of the present disclosure, one end of the supporting rod 131 is hinged to the second fulcrum 112 or the third fulcrum 113, and the other end is hinged to the first connecting point 133 on the rocker arm assembly 132.

For example, the second fulcrum 112 and the third fulcrum 113 are respectively provided with a metal tab for connection, a through hole is provided on the metal tab, and the two ends of the supporting rod 131 are respectively provided with a through hole 1311 as shown in fig. 2, when the supporting rod 131 is installed, one end of the supporting rod 131 passes through the through hole of the metal tab through a bolt assembly and simultaneously passes through the through hole 1311 of one end of the supporting rod 131, so that one end of the supporting rod 131 is hinged to the second fulcrum 112 and/or the third fulcrum 113. The other end of the supporting rod 131 is hinged to the first connecting point 133 of the swing arm assembly 132 in the same manner, and the length of the supporting rod 131 is not changed, so that when the swing arm assembly 132 swings around the swing center 136, the first connecting point 133 drives the supporting rod 131 to move, the supporting rod 131 drives the second fulcrum 112 or the third fulcrum 113 to move when moving, and the supporting rod 131 can swing relative to the second fulcrum 112 or the third fulcrum 113.

According to the embodiment of the present disclosure, the steering engine 135 has a first end portion 1351 and a second end portion 1352, the first end portion 1351 of the steering engine 135 is hinged to the second connection point 134 of the rocker arm assembly 132, and the steering engine 135 drives the first end portion 1351 to move, so as to push the second connection point 134 of the rocker arm assembly 132 and swing the rocker arm assembly 132 around the swing center 136.

According to the embodiment of the disclosure, the rocker arm assembly 132 is arranged between the steering engine 135 and the support rod 131 for transmission, the rocker arm assembly 132 can drive the support rod 131 to move when the steering engine 135 outputs a small driving force, and the rocker arm assembly 132 can further prevent the support rod 131 from bending due to a large acting force.

According to the embodiment of this disclosure, the control assembly that verts includes two control mechanism that verts, and wherein, the first control mechanism that verts is connected with the second fulcrum, and the second control mechanism that verts is connected with the third fulcrum.

For example, a first tilt control mechanism is mounted on a first side of the support arm 12, the first tilt control mechanism is connected to the second fulcrum 112 via the support rod 131, and a second tilt control mechanism is mounted on the other side of the support arm 12, the second tilt control mechanism is connected to the third fulcrum 113 via the support rod 131. Two control mechanism symmetries that vert set up the both sides at support arm 12, the first control mechanism and the second that verts that incline that are located the both sides limit of support arm 12 can realize the independent control to second fulcrum 112 and third fulcrum 113, second fulcrum 112 and third fulcrum 113's removal both can be synchronous also differential promptly, thereby realize the free control of verting to rotor bracket assembly 11, the control assembly that verts can carry out pitch control to rotor bracket assembly 11, also can carry out roll control to rotor bracket assembly 11 simultaneously, perhaps realize the combination control of the two, improve the flexibility and the control accuracy of rotor control.

According to an embodiment of the present disclosure, the spacing of the first connection point 133 of the rocker arm assembly 132 from the swing center 136 is less than or equal to the spacing of the second connection point 134 from the swing center 136.

For example, as shown in fig. 1 and 3a, the rocker arm assembly 132 has a swing center 136, the rocker arm assembly 132 is driven by the steering engine 135 and rotates around the swing center 136, the first connection point 133 and the second connection point 134 are different from the swing center 136, wherein a distance D1 from the first connection point 133 to the swing center 136 is smaller than or equal to a distance D2 from the second connection point 134 to the swing center 136. When the swing arm assembly 132 is mounted on the support arm 12 and swings with respect to the swing center 136, the swing arm assembly 132 forms a lever with the swing center 136 as a fulcrum, and by arranging that the distance D1 from the swing center 136 to the first connection point 133 is smaller than the distance D2 from the swing center 136 to the second connection point 134, the steering engine 135 can drive the second fulcrum 112 or the third fulcrum 113 connected to the first connection point 133 to move with a smaller output power. Rotor tilting device can make steering wheel 135 tend to the miniaturization under the condition that adopts the rocking arm subassembly 132 that has this kind of structure to even adopt less output's steering wheel, still can realize the control of verting to the rotor, be favorable to realizing rotor tilting device's lightweight and miniaturization. Meanwhile, by setting the distance D1 between the first connection point 133 and the swing center 136 to be smaller than or equal to the distance D2 between the second connection point 134 and the swing center 136, the distance that the steering engine 135 needs to drive the first end portion 1351 will be increased, and the displacement of driving the second fulcrum and/or the third fulcrum on the rotor bracket assembly 11 is reduced, so that the tilting control precision of the steering engine on the rotor bracket assembly can be improved.

Figure 3b schematically illustrates a structural schematic of a rocker arm bracket of a rotor tilter apparatus according to an embodiment of the present disclosure.

Figure 3c schematically illustrates a structural schematic of a limiting component of a rotor tilter device according to an embodiment of the disclosure.

As shown in fig. 3a, 3b, 3c, according to an embodiment of the present disclosure, the rocker arm assembly 132 includes: rocker arm stand 137, rocker arm main body 138, and connecting means 139. The rocker arm bracket 137 is fixedly arranged on the supporting arm 12, and two sides of the rocker arm bracket 137 are provided with first through holes 1371; a first end of the rocker arm body 138 is provided with a second through hole 1381 adapted to correspond to the first through hole 1371, and a first end remote from the rocker arm body 138 is provided with a first connection point 133 and a second connection point 134; the connection member 139 is disposed through the first and second through holes 1371 and 1381 to hinge the rocker arm bracket 137 and the rocker arm body 138.

According to an embodiment of the present disclosure, the rocker arm stand 137 is fixedly mounted on the support arm 12. For example, it may be welded to the support arm 12 via the base plate 1370 of the rocker arm bracket 137. Other bonding means may be used to bond to the support arm 12. In other embodiments, the rocker arm bracket 137 may be mounted to the support arm 12 by providing mounting holes in the base plate 1370 and by a bolt assembly.

According to the embodiment of the present disclosure, for example, tabs are disposed on two sides of the rocker arm bracket 137, and a first through hole 1371 is opened on the tab, and the first through hole 1371 may be a threaded hole, or another type of hole that can be matched with the second through hole 1381 to allow the connection component 139 to pass through.

According to an embodiment of the present disclosure, the connection part 139 may be, for example, one or more of a bolt assembly and a rolling bearing, etc., which enables the rocker arm stand 137 to be hinged with the rocker arm body 138 such that the rocker arm body 138 can swing within a defined angular range about the connection part 139.

According to an embodiment of the present disclosure, at least one stop component 1372 is also disposed on the rocker arm bracket 137, the stop component 1372 configured to stop the rocker arm body 138 when the rocker arm body 138 swings relative to the rocker arm bracket 137.

For example, two threaded holes 1373 are formed in the lug of each side edge of the rocker arm bracket 137, the threaded holes 1373 are located at positions far away from the first through hole 1371, and the limiting member 1372 is installed in the threaded holes 1373, and the limiting member may be a bolt with threads, for example, and during installation, the limiting member 1372 is screwed into the threaded holes 1373, and after being screwed into a predetermined position, a thread fastening glue is applied to the limiting member 1372, so that the limiting member 1372 is prevented from falling out of the threaded holes 1373 in the using process.

In other embodiments, the stop 1372 may be fixed by welding, for example, a stop for limiting the rocker arm body 138 is welded to a tab on each side of the rocker arm bracket 137. In another embodiment, the stop feature may be, for example, a structure integrally formed with the rocker arm stand 137.

According to the embodiment of the present disclosure, by providing the limiting component 1372 on the rocker arm bracket 137, the limiting component 1372 can limit the swing limit position of the rocker arm main body 138, which is beneficial to preventing the damage of components caused when the rotor exceeds the tilting limit position due to accidental operation.

Figure 4 schematically illustrates a structural schematic view of a rotor bracket assembly of a rotor tilter apparatus according to an embodiment of the disclosure.

As shown in fig. 4, according to an embodiment of the present disclosure, rotor bracket assembly 11 includes: a rotor support body 114, and a steering member 115, the rotor support body 114 being configured to mount a rotor (not shown), the rotor support body 114 having a first end portion with a second pivot point 112 disposed on a first side thereof, and a second end portion with a third pivot point 113 disposed on a second side thereof; steering member 115 is disposed at a second end of rotor pylon body 114 opposite the first end of the rotor pylon body and is connected to support arm 12 as first fulcrum 111.

For example, a tab is provided on the second pivot 112 of the rotor bracket assembly 11, the tab has a through hole 1121, and the through hole 1121 is hinged to a through hole 1311 provided at one end of the support rod 131 by a bolt member, so as to connect the support rod 131 to the second pivot 112. The third pivot 113 of the rotor bracket assembly 11 is provided with a tab, the tab is provided with a through hole 1131, the through hole 1131 is hinged to a through hole 1311 provided at one end of the other support rod 131 through a bolt component, so as to connect the other support rod 131 to the third pivot 113.

According to the embodiment of the present disclosure, the steering component 115 is connected to the support arm 12 as the first fulcrum 111, and the rotor bracket main body 114 can drive the steering component 115 to rotate relative to the support arm 12, that is, the rotor bracket main body 114 can tilt relative to the support arm 12.

According to the embodiment of the present disclosure, the steering member is connected to the support arm 12 as the first fulcrum 111, and the degree of freedom of tilting of the rotor mast assembly 11 can be improved.

According to an embodiment of the present disclosure, steering member 115 is provided with a first connection 1151 to rotor cradle body 114 and a second connection 1152 to support arm 12; steering member 115 is configured to rotate rotor cradle body 114 about first link 1151 in a first direction, and rotor cradle body 114 rotates steering member 115 about second link 1152 in a second direction relative to support arm 12; wherein the first direction is perpendicular to the second direction.

For example, a first connection 1151 (e.g., a first pivot shaft) is disposed on steering member 115, steering member 115 is capable of rotating rotor cradle body 114 about first connection 1151 in a first direction (e.g., the axial direction of the first pivot shaft), as shown in fig. 4, about Z1, steering member 115 is mounted on rotor cradle body 114 via first connection 1151, such that rotor cradle body 114 can rotate steering member 115 in a Z2 direction, steering member 115 is provided with a second connection 1152 (e.g., a slotted through hole) at the connection with arm 12, and rotor cradle body 114 rotates about Z2 axis in a second direction (e.g., the Z2 direction) by driving steering member 115 about second connection 1152, i.e., steering member 115 rotates about second connection 1152 in the second direction relative to arm 12. The Z1 axis is perpendicular to the Z2 axis, and thus, the rotor pylon body 114 can be tilted at an arbitrary angle with a sufficient degree of freedom when tilted.

Fig. 5a schematically shows a structural schematic diagram of a steering engine bracket of a rotor tilting device according to an embodiment of the present disclosure.

Figure 5b schematically illustrates a structural schematic of a bushing of a rotor tilter apparatus according to an embodiment of the disclosure.

As shown in fig. 1, 5a, and 5b, according to an embodiment of the present disclosure, the second end portion 1352 of the steering engine 135 is mounted on the support arm 12 via a steering engine bracket 1353, and the steering engine 135 is configured to be swingable around the steering engine bracket 1353 at the second end portion 1352 of the steering engine 135.

For example, as shown in fig. 5a, the steering engine bracket 1353 has a tab connected to the second end portion 1352 of the steering engine 135, the tab is provided with a through hole 1354, and a bolt assembly is passed through the through hole 1354 to hinge the second end portion 1352 of the steering engine 135 to the through hole 1354. The end of the steering engine bracket 1353, which is far away from the lug, is provided with a plurality of through holes 1355 (e.g., 4) for mounting the steering engine bracket 1353 on the support arm 12 through bolt assemblies. In other embodiments of the present disclosure, the steering engine bracket 1353 and the support arm 12 may be connected by other methods, such as welding, bonding, etc.

As shown in fig. 5b, a bushing 1356 is disposed at the connection between the steering engine bracket 1353 and the second end portion 1352 of the steering engine 135, according to embodiments of the present disclosure.

For example, the bushing 1356 has a through hole 1357, an outer surface 1358, and an inner side 1359, wherein when installed, the inner side 1359 of the bushing 1356 rests against the inner side of the tab of the steering engine bracket 1353, and the through hole 1357 is passed through by a bolt assembly to articulate the second end 1352 of the steering engine 135 with the steering engine bracket 1353.

According to the embodiment of the disclosure, the outer surface 1358 of the bushing is tightly fitted with the through hole of the lug of the steering engine bracket 1353 (i.e., is embedded into the through hole 1354 of the lug of the steering engine bracket), so that when the second end portion 1352 of the steering engine 135 deflects around the through hole 1354 of the steering engine bracket 1353, the through hole 1354 of the lug of the steering engine bracket 1353 does not wear and accumulate due to long-term excessive friction, thereby increasing transmission errors and positioning errors.

According to the embodiment of the disclosure, the inner side surface of the lug of the steering engine bracket 1353 is attached to the inner side surface 1359 of the bushing 1356; a bushing 1356 is embedded in the lug through hole 1354 and is hinged to the second end portion 1352 of the steering engine 135 through a bolt assembly.

Figure 6a schematically illustrates a schematic view of a pitch operation of a rotor tilter device according to an embodiment of the present disclosure; figure 6b schematically illustrates a schematic diagram of a roll operation of a rotor tilter device according to an embodiment of the present disclosure.

As shown in fig. 6a and 6b, a rotor tilter apparatus according to an embodiment of the present disclosure is operated and controlled by the following steps. In the figure, M is a main rotor, which is fixedly connected with a rotor bracket assembly 11 (comprising a large gear plate M1) through a bolt assembly. In actual flight, the operation of the main rotor M mainly includes "pitch" operation and "roll" operation. Wherein the "pitch" operation includes a heads-down operation and a heads-up operation; the "roll" operation includes a left roll operation and a right roll operation. In this embodiment, the large gear plate M1 is an output end of a prerotation system of a rotorcraft (unmanned aerial vehicle or manned aircraft), and provides power and load for the rotation operation of a main rotor before takeoff of the aircraft.

Here, the actual operation process of the rotor tilting device will be described with reference to fig. 6a and 6b, taking a lowering operation (see fig. 6a) and a left tilting operation (see fig. 6b) as examples.

When rotor head lowering operation is needed to be carried out, left steering engine 135 and right steering engine 135 move downwards (i.e. in the direction shortened by steering engine output lug) after receiving the operation instruction of tilting control, so as to pull left and right support rods 131 to move downwards by equidirectional load, and then drive the rotor which is fixedly installed as a whole with rotor bracket assembly 11 to rotate around the axis of first fulcrum at Z1 (refer to FIG. 4), so that rotor bracket assembly drives the rotor to generate head lowering deflection. Left and right steering engines 135 also adopt synchronous control when carrying out rotor head-up operation, only need carry out corresponding opposite direction's operation can, here no longer give unnecessary details.

When main rotor left-leaning operation is required to be carried out, according to an operation instruction, left and right steering gears 135 move and load after receiving an operation instruction of tilting control, and support rods 131 move up and down in opposite directions of load, so that rotors integrally connected with rotor bracket assembly 11 in a fixed mounting mode are driven to rotate around a Z2 (figure 4) axis through the rotation of the first fulcrum, and rotor bracket assembly 11 is driven to rotate to generate left-leaning deflection. The steering wheel also adopts differential control about when carrying out rotor right bank operation, only need carry out corresponding opposite direction's operation can, here no longer gives unnecessary details.

The present disclosure also provides a rotary wing aircraft comprising a fuselage; the power rotor wing is used for providing power for the autorotation rotor wing aircraft; the lifting rotor wing is used for providing lifting force for the autorotation rotor wing aircraft; and a rotor tilter device as described above disposed at a top of a fuselage of the rotary-wing aircraft and configured to mount the lift rotor to the fuselage.

For example, the rotor tiltrotor may be a self-rotating rotorcraft applied in the field of unmanned aerial vehicles. The tail part of the body of the autorotation rotor aircraft is provided with a power rotor which provides power for the aircraft so as to push the aircraft to move forwards. Rotor verts the top of device fixed mounting at the fuselage of aircraft, and the rotor verts the lift rotor of installing the aircraft on the device, and the lift rotor drives the rotation through the big fluted disc on the rotor bracket component, and then provides lift for the aircraft. Therefore, the aircraft disclosed by the invention can provide larger tilting control force for the lifting rotor wing under the condition of not changing the size of the rotor wing tilting device, the maneuverability of the aircraft is improved, and the structure of the aircraft is also simplified.

The terms "front," "back," "upper," "lower," "upward," "downward," and other orientation descriptions used in this disclosure are for the purpose of describing exemplary embodiments of the disclosure, and are not intended to limit the structure of exemplary embodiments of the disclosure to any particular position or orientation. Terms of degree such as "substantially" or "approximately" are understood by those skilled in the art to refer to a reasonable range outside of the given value, e.g., the usual tolerances associated with the manufacture, assembly, and use of the described embodiments. The use of "first," "second," and similar terms in the present disclosure does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity.

Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.

The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.

Claims (11)

1. A rotor tiltrotor apparatus, comprising:

a rotor bracket assembly for mounting a rotor having three fulcrums, the rotor bracket assembly configured to be moved by two of the three fulcrums to control the rotor to tilt;

a support arm connected at one end to a first of the three fulcrums, the rotor mast assembly configured to rotate relative to the support arm about the first fulcrum;

a tilt control assembly coupled to a second pivot point and/or a third pivot point of the three pivot points, the tilt control assembly configured to control movement of the second pivot point and/or the third pivot point to tilt the rotor bracket assembly about the first pivot point.

2. The rotor tilt apparatus of claim 1, wherein the tilt control assembly includes at least one tilt control mechanism, the tilt control mechanism comprising:

a support bar;

the rocker arm assembly is arranged on the supporting arm in a swinging mode, a first connecting point and a second connecting point are arranged on the rocker arm assembly, and the first connecting point is connected with the second fulcrum or the third fulcrum through the supporting rod;

and the first end part of the steering engine is connected with the second connecting point, and the steering engine is configured to drive the rocker arm assembly to swing around a swing center and drive the second fulcrum or the third fulcrum to move.

3. Rotor tilting device according to claim 2,

the tilting control assembly comprises two tilting control mechanisms, wherein the first tilting control mechanism is connected with the second fulcrum, and the second tilting control mechanism is connected with the third fulcrum.

4. Rotor tilting device according to claim 2 or 3, wherein the distance from the first connection point to the centre of oscillation is smaller than or equal to the distance from the second connection point to the centre of oscillation.

5. Rotor tilting device according to claim 2 or 3, wherein the rocker arm assembly comprises:

the rocker arm bracket is fixedly arranged on the supporting arm, and two sides of the rocker arm bracket are provided with first through holes;

the first end part of the rocker arm main body is provided with a second through hole corresponding to the first through hole, and the first end part far away from the rocker arm main body is provided with the first connecting point and the second connecting point;

a connecting member configured to pass through the first and second through holes to hinge the rocker arm stand and the rocker arm body.

6. The rotor tilt apparatus of claim 5, wherein the rocker arm bracket is further provided with at least one stop feature configured to stop the rocker arm body as the rocker arm body swings relative to the rocker arm bracket.

7. The rotor tilt apparatus of claim 1, wherein the rotor bracket assembly comprises:

the rotor wing bracket main body is used for installing a rotor wing, the first side edge of the first end part of the rotor wing bracket main body is provided with the second fulcrum, and the second side edge is provided with the third fulcrum;

and a steering member provided at a second end portion of the rotor bracket body opposite to the first end portion of the rotor bracket body and connected to the support arm as the first fulcrum.

8. The rotor tilt apparatus of claim 7, wherein the steering member is provided with a first connection to the rotor bracket body and a second connection to the support arm;

the steering component is configured to rotate the rotor bracket body in a first direction about the first connector, the rotor bracket body driving the steering component to rotate relative to the support arm in a second direction about the second connector;

wherein the first direction is perpendicular to the second direction.

9. A rotor tilt apparatus according to claim 2 wherein the second end of the steering engine is mounted to the support arm by a steering engine bracket, the steering engine being arranged to be swingable about the steering engine bracket at the second end of the steering engine.

10. The rotor tilt apparatus of claim 9, wherein a bushing is provided at a connection between the steering engine bracket and the second end of the steering engine.

11. An autogyro aircraft, comprising:

a body;

the power rotor wing is used for providing power for the autorotation rotor wing aircraft;

a lift rotor for providing lift to the autorotation rotor craft; and

the rotor tilter apparatus of any of claims 1-10, disposed atop a fuselage of the autogyro aircraft and configured to mount a lift rotor to the fuselage.

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